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3 years ago

10

A recipe for cookies needs 240g of flour to make enough cookies for 5 people. How much flour would you need to make cookies for

15 people?

1 answer:

Serga [27]3 years ago

5 0

Answer:

720g

Step-by-step explanation:

5 people = 240g

×3 x3

15 people = 720g

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The weights of the fish in a certain lake are normally distributed with a mean of 11 lb and a standard deviation of 6. if 4 fish

Alexus [3.1K]

Since the sample standard deviation is now known, we use the z-score test. The formula is given as:

z= (X – μ) / (s / sqrt(n))

Where,

X = sample mean = 8.6 lb to 14.6 lb

μ = population mean = 11 lb

s = population standard deviation = 6

n = sample size = 4

1st: Calculating for z when x = 8.6 lb

z = (8.6 – 11) / (6 / sqrt4)

z = - 0.8

Using the standard distribution table for z:

Probability (x = 8.6 lb) = 0.2119

2nd: Calculating for z when x = 14.6 lb

z = (14.6 – 11) / (6 / sqrt4)

z = 1.2

Using the standard distribution table for z:

Probability (x = 14.6 lb) = 0.8849

Therefore the probability that the mean weight will be between 8.6 and 14.6 lb:

Probability (8.6 ≤ x ≤ 14.6 ) = 0.8849 - 0.2119

Probability (8.6 ≤ x <span>≤ 14.6 ) = 0.673 (ANSWER)</span>

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3 years ago

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Solve for x than find the perimeter

My name is Ann [436]

Answer:

136 in

Step-by-step explanation:

Assuming the figure is a square with equal sides, then

4x - 2 = 3x + 7 ( subtract 3x from both sides )

x - 2 = 7 ( add 2 to both sides )

x = 9

Thus side = 3x + 7 = 3(9) + 7 = 27 + 7 = 34

Thus

perimeter = 4 × 34 = 136 in

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Which expression does NOT represent the statement divide the difference of 20 and eight by the sum of one and three?

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Andy is building a model of a square pyramid for a class project. The side length of the square base is 11 inches and the slant

Wewaii [24]

Answer:

The surface area of the model pyramid is $451\ in^{2}$

Step-by-step explanation:

we know that

The surface area of the pyramid is equal to

$SA=B+LA$

where

B is the area of the base of the pyramid

LA is the lateral surface of the pyramid

<em>Find the area of the base B</em>

$B=11^{2}=121\ in^{2}$ -----> is a square

<em>Find the lateral surface area of the pyramid LA</em>

we know that

The lateral surface area is equal to the area of its four triangular faces

$LA=4[\frac{1}{2}(11)(15)]=330\ in^{2}$

<em>Find the surface area of the pyramid</em>

Substitute the values

$SA=121+330=451\ in^{2}$

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3 years ago